Detroit is an interesting case and if you know the city, you are probably better placed to narrow down the best neighborhoods for potential upside. 

I think narrowing down your scope to what your strategy is will be key to your success.  

It’s a great way to narrow down the site to what interests and benefits you most.Best of luck to you!

Have them narrow this down to the area that is relevant to you and your home.

So, I'll commence to narrow and compile my official choices so I can make my selection.  

I agree with Jacqueline with getting your real estate license and learning from all of the great free info on B and a mentor is key. 

And what questions do you ask potential agents to narrow down your best choice?

This wholesaler talked about "unique breathtaking ocean views", when in fact that entitled land had mostly hillside views and only a narrow 30-degree very abstracted ocean view far on the horizon.

There are no class B and C being built in the urban cores but there are some A's that will slide like @Dmitri L. pointed out.

In my case, I spent many, many hours searching the MLS all over California, narrowed it down to a sub-market that I thought had potential, and scoured the market for deals until I found one.